CN103891368B - The method and apparatus of combined dispatching for peer link and WWAN based on interference - Google Patents
The method and apparatus of combined dispatching for peer link and WWAN based on interference Download PDFInfo
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- CN103891368B CN103891368B CN201280051397.6A CN201280051397A CN103891368B CN 103891368 B CN103891368 B CN 103891368B CN 201280051397 A CN201280051397 A CN 201280051397A CN 103891368 B CN103891368 B CN 103891368B
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- wireless device
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- transmission power
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/38—TPC being performed in particular situations
- H04W52/383—TPC being performed in particular situations power control in peer-to-peer links
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L2001/0092—Error control systems characterised by the topology of the transmission link
Abstract
The method for operating the first wireless device includes: that reception is permitted from base station, and the allowance is to carry out peer-to-peer communications with the second wireless device for using used time-frequency resources are communicated with base station progress WWAN by third wireless device.In addition, method includes: to be used for the transmission power of peer-to-peer communications in company with permit reception.Transmission power be based on can by the base station from the received transmission of third wireless device caused by interference determine.In addition, method include: on the time-frequency resources, be less than or equal to received transmission power power, communicated using peer-to-peer communications with the second wireless device.
Description
Technical field
In summary, this disclosure relates to communication systems, specifically, this disclosure relates to the equities based on interference
The combined dispatching of link and wireless wide area network (WWAN).
Background technique
In WWAN, all communications between wireless device all pass through the uplink between wireless device and serving BS
Road/downlink channel.When two wireless devices are when each other nearby, peer-to-peer communications are can be used directly to carry out together in they
Communication, instead of using the uplink/downlink channel for passing through serving BS.Peer-to-peer communications can be logical by being exclusively used in equity
The resource of letter is realized.Alternatively, peer-to-peer communications can be realized by WWAN resource.It needs facilitate with least interference
In the case where, pass through the method and apparatus of WWAN resource progress peer-to-peer communications.
Summary of the invention
In the one aspect of present disclosure, the device and method of the first wireless device of operation are provided.According to this method,
First wireless device is received from base station permits, and the allowance is to carry out WWAN by third wireless device and the base station for use
Time-frequency resources used in communicating to carry out peer-to-peer communications with the second wireless device.In addition, the first wireless device is in company with institute
State transmission power of the permit reception for peer-to-peer communications.The transmission power be based on can to by the base station from the third without
It interferes to determine caused by the received transmission of line equipment.In addition, the first wireless device is on the time-frequency resources, with
Less than or equal to received transmission power power, communicated using peer-to-peer communications with second wireless device.
In the one aspect of present disclosure, the device and method of operation base station are provided.According to this method, base station is to
One wireless device and the second wireless device, which send to be communicated by third wireless device with base station progress WWAN for use, to be made
The allowance of time-frequency resources, wherein second wireless device and first wireless device are in peer-to-peer communications.This
Outside, the base station is determined based on the estimated interference to from the third wireless device received signal and is used for described first
The transmission power of peer-to-peer communications between wireless device and second wireless device.In addition, the base station is in company with the allowance
The transmission power is sent at least described first wireless device.
Detailed description of the invention
Fig. 1 is the exemplary figure for showing the hardware implementation mode for the device using processing system.
Fig. 2 is the figure of wireless peer communication system.
Fig. 3 is the figure for showing WWAN and peers.
Fig. 4 is the figure for showing illustrative methods.
Fig. 5 is for showing the figure for estimating the first illustrative methods of the rate for scheduled peer-to-peer communications.
Fig. 6 is for showing the figure for estimating the second illustrative methods of the rate for scheduled peer-to-peer communications.
Fig. 7 is the flow chart of the illustrative methods of wireless communication.
Fig. 8 is the flow chart for the first method for estimating the wireless communication of the rate for scheduled peer-to-peer communications.
Fig. 9 is another stream of the first method for estimating the wireless communication of the rate for scheduled peer-to-peer communications
Cheng Tu.
Figure 10 is the flow chart for the second method for estimating the wireless communication of the rate for scheduled peer-to-peer communications.
Figure 11 is the conceptual block diagram for showing the function of the first exemplary means.
Figure 12 is the flow chart of another illustrative methods of wireless communication.
Figure 13 is the conceptual block diagram for showing the function of the second exemplary means.
Specific embodiment
The specific embodiment illustrated below in conjunction with attached drawing is intended as the description to various configurations, and is not intended to generation
Unique configuration of concept described herein can be implemented in table.In order to provide the comprehensive understanding to each conception of species, specific embodiment party
Formula includes detail.But it will be apparent to those skilled in the art that in the feelings without these details
Under condition, these concepts also can be implemented.In some cases, well-known structure and component are shown in block diagram form, so as to
Avoid fuzzy such concept.
The some aspects of communication system are provided referring now to various device and method.These device and method will be below
Specific embodiment in be described, and pass through various frames, module, component, circuit, step, process, algorithm etc. in the accompanying drawings
It is shown Deng (being collectively referred to as " element ").Electronic hardware, computer software or any combination thereof can be used to realize these
Element.Hardware is implemented as such element and is also implemented as software, depends on specific application and to whole system institute
The design constraint of application.
For example, any combination of any part or element of element or element, can use including one or
" processing system " Lai Shixian of multiple processors.The example of processor includes microprocessor, microcontroller, digital signal processor
(DSP), field programmable gate array (FPGA), programmable logic device (PLD), state machine, gate control logic, discrete hardware circuit
With the other appropriate hardware for being configured as the various functions that execution is described through present disclosure.One or more in processing system
A processor can execute software.Software should be construed broadly as meaning instruction, instruction set, code, code segment, program
Code, subprogram, software module, application, software application, software package, routine, subroutine, object, executable file, is held program
Capable thread, program, function etc., no matter its be referred to as software, firmware, middleware, microcode, hardware description language or its
Its term.Software can be located on computer-readable medium.Computer-readable medium can be non-transitory computer readable medium
Matter.For example, non-transitory computer-readable medium include for store can by computer access and read software and/or
The magnetic storage apparatus (for example, hard disk, floppy disk, tape) of instruction, CD are (for example, compact disk (CD), digital versatile disc
(DVD), smart card, flash memory device (for example, card, stick, Keyed actuator)), random access memory (RAM), read-only memory
(ROM), programming ROM (PROM), erasable PROM (EPROM), electric erasable PROM (EEPROM), register, removable disk
And any other medium appropriate.Computer-readable medium can be located in processing system, the outside of processing system or across
It more include multiple entities of processing system to be distributed.Computer-readable medium can be embodied in computer program product.Citing
For, computer program product may include the computer-readable medium in encapsulating material.
Therefore, in one or more exemplary embodiments, the function can be with hardware, software, firmware or it is any
Combined mode is realized.When implemented in software, then the function can be used as one or more instructions or code storage
On a computer-readable medium, or the one or more instructions or the code that are encoded on computer-readable medium.Computer can
Reading medium includes computer storage medium.Storage medium can be any usable medium that computer can access.Pass through example
Mode rather than limitation mode, such computer-readable medium may include RAM, ROM, EEPROM, CD-ROM or its
Its optical disc storage, disk storage or other magnetic storage apparatus or can be used in carry or store have instruction or data structure
Form desired program code and any other medium that can be accessed by computer.As it is used herein, magnetic
Disk and CD include compact disk (CD), laser-optical disk, CD, digital versatile disc (DVD), floppy disk and Blu-ray Disc,
Middle disk usually magnetically replicate data, and CD then usually utilizes laser to optically replicate data.Combinations of the above is also answered
In the range of being included in computer-readable medium.Those skilled in the art will recognize that how to be best accomplished through this
The described function that disclosure provides, depending on specifically application and the whole design constraints applied to whole system.
Fig. 1 is the exemplary concept map for showing the hardware implementation mode of the device 100 using processing system 114.It can use
Bus architecture (usually indicates) Lai Shixian processing system 114 with bus 102.According to the specific application and entirety of processing system 114
Design constraint, bus 102 may include any number of interconnection and bridge.Bus 102 will include one or more processing
Device and/or hardware module (logical common processor 104 indicates) and computer-readable medium (logical conventional computer readable medium 106
Indicate) various circuits link together.Bus 102 also links such as timing source, peripheral equipment, voltage adjuster and power tube
Manage the various other circuits of circuit etc., wherein these circuits be all it is known in the art, therefore do not do it is any into
The description of one step.Bus interface 108 provides the interface between bus 102 and transceiver 110.Transceiver 110 provides a mean for
Transmission medium is come the module that is communicated with various other devices.
Processor 104 is responsible for management bus 102 and general processing, including executes and store on computer-readable medium 106
Software.When software is executed by processor 104, so that the execution of processing system 114 is retouched below for any specific device
The various functions of stating.Computer-readable medium 106 can be also used for storing the number operated when processor 104 executes software
According to.
Fig. 2 is the figure of exemplary peer communication system 200.Peer communication system 200 include multiple wireless devices 206,
208,210,212.Peer communication system 200 can be Chong Die with cellular communication system (for example, wireless wide area network (WWAN)).Wirelessly
Some in equipment 206,208,210,212 can be communicated together with peer-to-peer communications, some to be communicated with base station 204,
It is some to carry out both communications.For example, as shown in Figure 2, wireless device 206,208 is in peer-to-peer communications, is wirelessly set
Standby 210,212 in peer-to-peer communications.Wireless device 212 is also communicated with base station 204.
Wireless device alternatively can be known as user equipment, movement station, subscriber station, movement by those of ordinary skill in the art
Unit, subscriber unit, radio-cell, radio node, remote unit, mobile device, wireless telecom equipment, remote equipment, movement
Subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, hand-held device, user agent, mobile client, client
End or some other term appropriate.Base station alternatively can be known as access point, base station transceiver by those skilled in the art
Machine, wireless base station, transceiver, transceiver function unit, basic service set (BSS), extended service set (ESS), node B,
Evolved node B or some other term appropriate.
Illustrative methods and device discussed below are applicable to any one of a variety of wireless peer communication systems,
For example, based on FlashLinQ, WiMedia, bluetooth, the wireless peer communication system of ZigBee or being based on IEEE 802.11
The Wi-Fi of standard.It is discussed to simplify, illustrative methods and device is discussed under the background of FlashLinQ.But this field
In ordinarily skilled artisan will understand that, it is logical that illustrative methods and device can be more generally applicable to a variety of other wireless equities
Letter system.
Fig. 3 is the diagram 300 for showing WWAN and peers.It as shown in Figure 3, can be by resource spectrum imaging at WWAN
Resource 302 and reciprocity (P2P) resource 304.According to illustrative methods, wireless device is (for example, wireless device 210 or wirelessly set
It is standby 212) can the interference caused by the received transmission of serving BS (for example, base station 204) institute of the use based on WWAN resource be
It is no to be less than thresholding, peer-to-peer communications are carried out using WWAN resource 302.
Fig. 4 is the diagram 400 for showing illustrative methods.As shown in Figure 4, wireless device 404,406 is in equity
Among communication, wireless device 408 is communicated with base station 402.Wireless device 404,406 is located within the scope of base station 402.Root
According to the first illustrative methods, base station 402 is for wireless device 404 and/or wireless device 406 to received from wireless device 408
The interference of signal is estimated.Base station 402 can by the power control loop that is run between wireless device 404,406 itself come
Estimation interference.It base station 402 can be based on for the previous interference 410 from wireless device 404 and/or from wireless device 406
Previous interference 411 estimate to previously from the interference of 408 received signal 412 of wireless device.Base station 402 can be based on from nothing
The ratio of at least one of 408 received signal quality of line equipment and/or signal power and wireless device 404,406, to estimate
Meter interference.When ratio is less than thresholding, interference is stronger, and base station 402 is not directed to the transmission of wireless device 404,406 and wireless device
408 simultaneously use the allowance of same asset.When ratio is greater than thresholding, interference is lower than interference threshold, 402 sketch-based user interface of base station
It is big how many compared with thresholding, to determine (414) transmission power, and the allowance 416 with transmission power is sent to and is wirelessly set
Standby 404, simultaneously to use identical resource with wireless device 408.Base station 402, which is also sent to wireless device 406, permits 417.
Permitting 417 also may include identified transmission power.When wireless device 406 will serve as receiver in peer-to-peer communications,
Permit 417 not needing to include identified transmission power.When the ratio is higher, base station 416 can determine that (414) emit function
Rate is P1, and when the ratio is lower, but it is greater than thresholding, base station can determine that (414) transmission power is P2, wherein P2<
P1.In one configuration, identified transmission power can be used for the maximum of the peer-to-peer communications between wireless device 404,406
Transmission power.
When interference is less than interference threshold, base station 402 determines that (414) transmission permits 416,417, and does when interference is greater than
When disturbing thresholding, the determination of base station 402 does not send allowance 416,417.Therefore, base station 402 judges whether interference estimated by (414) is small
In interference threshold.If interference is less than interference threshold, base station 402 determines (414) for pair between wireless device 404,406
The transmission power of equal communications, and the allowance 416 including transmission power is sent to wireless device 404.As described above, base station 402
It is also sent to wireless device 406 and permits 417.Permitting 417 can also include identified transmission power.Permit 416,417 to be used for
Allow wireless device 404,406 to use respectively carrying out communicating used phase in UL with base station 402 with by wireless device 408
Same time-frequency resources.
In response to permitting 416, wireless device 404 can send confirmation (ACK) or negative confirmation (NACK) to base station 402
418, to confirm to allowance.ACK/NACK 418 can be sent by physical uplink control channel (PUCCH).
ACK/NACK 420 can be transmitted to wireless device 406 by base station 402.ACK/NACK 420 can pass through physical mixed indicator
Channel (PHICH) is sent.If wireless device 404 receives allowance, wireless device 404,406 can be by by wirelessly setting
Standby 408 communicated using WWAN communicated in UL with base station 402 in the identical resource that uses simultaneously (for example, identical
Identical resource element and orthogonal frequency division multiplexing (OFDM) symbol at subcarrier), directly using peer-to-peer communications come together into
Row communication (422).
Fig. 5 is for showing the diagram for estimating the first illustrative methods of the rate for scheduled peer-to-peer communications
500.As shown in Figure 5,404 pilot signal transmitted 510 of wireless device.Wireless device 406 monitors pilot signal 510, Yi Jili
It is responded with channel quality indicator (CQI) feedback 514.CQI feedback 514 considers interference 512i caused by wireless device 408,
It is assumed that receiving the time of pilot signal 510 in wireless device 406, wireless device 408 carries out transmission 512 just in UL.Wirelessly set
Standby 404 receive CQI feedback 514, and (516) rate is determined based on CQI feedback 514.Then, wireless device 404 can be to
Wireless device 406 sends rate determined by (518), and sends data to wireless device 406 with identified rate.
Fig. 6 is for showing the diagram for estimating the second illustrative methods of the rate for scheduled peer-to-peer communications
600.As shown in Figure 6, base station 402 sends position 614 of the reference signal sent from wireless device 406 in WWAN resource.
Wireless device 406 sends reference signal 616, and the reference signal 616 is received by base station 402.Reference signal 616 is also wirelessly set
Standby 404 receive, this is because wireless device 404 monitor reference signal in resource indicated by received location information 614.
Wireless device 404, which is also received from base station 402, permits 618.Permitting 618 includes the power that wireless device 406 sends reference signal 616
P1.Wireless device 404 is based on power P1And power P2To estimate the channel H between (620) wireless device 404,406 (that is, H=
P2/P1), wherein wireless device 404 is with power P2Reference signal 616 is received, and (620) are determined based on estimated channel H
Rate.Then, wireless device 404 can send identified rate to wireless device 406, and with identified rate to nothing
Line equipment 406 sends data.Second illustrative methods do not account for wireless device 408 by UL to base station 402 carry out
Interference caused by transmission 612.
Fig. 7 is the flow chart 700 of the illustrative methods of wireless communication.Method is executed by wireless device.Such as institute in Fig. 7
Show, wireless device (for example, wireless device 404) is received from base station (for example, base station 402) permits, and the allowance is for use
WWAN is carried out by third wireless device (for example, wireless device 408) and base station and communicate used time-frequency resources come with the
Two wireless devices (for example, wireless device 406) carry out peer-to-peer communications (702).Only wirelessly set by base station from third when base station is determined
When interference caused by standby received transmission is less than interference threshold, allowance can be received from base station.Wireless device connects in company with allowance
Receive the transmission power (704) for being used for peer-to-peer communications.Transmission power is based on may be by base station from the received biography of third wireless device
It interferes to determine caused by defeated.In one configuration, in response to permitting, WWAN resource, Xiang Jizhan is can be used in wireless device
Send the ACK/NACK (706) for being directed to Peer Data Communication.In another arrangement, WWAN resource can be used in wireless device,
The ACK/NACK (706) for being directed to Peer Data Communication is received from base station.In such a configuration, ACK/NACK is derived from the second nothing
Line equipment.Then, wireless device is on the time-frequency resources, be less than or equal to received transmission power function
Rate is communicated (708) with the second wireless device using peer-to-peer communications.As described above, transmission power can be for the first nothing
The maximum transmission power of peer-to-peer communications between line equipment and the second wireless device.
Fig. 8 is the flow chart for the first method for estimating the wireless communication of the rate for scheduled peer-to-peer communications
800.Method by the wireless device for the transmitter in peer-to-peer communications is served as by executing.As shown in Figure 8, wireless device (example
Such as, wireless device 404) in the time-frequency resources as used in third wireless device (for example, wireless device 408), to
Two wireless devices (for example, wireless device 406) pilot signal transmitted (802).Wireless device is in time-frequency resources, from
Two wireless devices receive the CQI feedback (804) in response to transmitted pilot signal.It is anti-that wireless device is based on the received CQI of institute
Feedback, to determine the rate (806) being directed to the communication of the second wireless device.Communication with the second wireless device is (referring to Fig. 7's
708) with the progress of identified rate.
Fig. 9 is another stream of the first method for estimating the wireless communication of the rate for scheduled peer-to-peer communications
Journey Figure 90 0.Method by the wireless device for the receiver in peer-to-peer communications is served as by executing.Wireless device is (for example, wirelessly set
It is standby 406) in the time-frequency resources as used in third wireless device (for example, wireless device 408), wirelessly set from second
Standby (for example, wireless device 404) receives pilot signal (902).Wireless device is in response to the received pilot signal of institute, when described
In m- frequency resource, CQI feedback (904) are sent to the second wireless device.Communication with the second wireless device is (referring to Fig. 7's
708) with based on channel quality indicator feedback (channel quality indicator feedback) determined by rate into
Row.
Figure 10 is the flow chart for the second method for estimating the wireless communication of the rate for scheduled peer-to-peer communications
1000.Method by the wireless device for the transmitter in peer-to-peer communications is served as by executing.As shown in Figure 10, wireless device
(for example, wireless device 404) can receive to exist from the reference signal that the second wireless device (for example, wireless device 406) is sent
Position (1002) in WWAN resource.Position of the reference signal in WWAN resource is received from base station (for example, base station 402)
's.Using the received location information of institute, wireless device receives reference signal (1004) from the second wireless device.Wireless device companion
The first power P of permit reception1(referring to the 702 of Fig. 7) (1006).First power P1It is the power (1006) for sending reference signal.Nothing
Line equipment determines the second power P that reference signal is received with it2(1008).Wireless device is based on the first power P1With the second function
Rate P2To estimate channel H (1010).Wireless device based on the received transmission power of estimated channel H and institute, determine for
The rate (referring to the 704 of Fig. 7) (1012) that second wireless device is communicated.Communication with the second wireless device is (referring to Fig. 7's
708) with the progress of identified rate.
Figure 11 is the conceptual block diagram 1100 for showing the function of the first exemplary means 100.Device can be such as wireless
The wireless device of equipment 404 or wireless device 406 etc.Device 100 includes module 1102, and the module 1102 connects from base station
Receipts are permitted, and the allowance is to communicate used T/F with base station progress WWAN by third wireless device for use to provide
Source to carry out peer-to-peer communications with the second wireless device.Device 100 further includes module 1104, and the module 1104 is in company with permit reception
Transmission power for peer-to-peer communications.Transmission power be based on can as base station caused by the received transmission of third wireless device
It interferes to determine.Device 100 further includes module 1106, and the module 1106 is on time-frequency resources, to be less than or wait
In received transmission power power, communicated using peer-to-peer communications with the second wireless device.Device 100 may include volume
Outer module, the additional module execute each step in the step in the aforementioned flowchart of Fig. 7-10.Therefore, Fig. 7-
Each of 10 aforementioned flowchart step can be executed by module and device 100 may include in these modules
One or more modules.
Figure 12 is the flow chart 1200 of another illustrative methods of wireless communication.Method is by such as base station 402 etc
Base station executes.Whether base station is less than interference threshold to from the interference of third wireless device received signal based on estimated,
(1202) are permitted to determine whether sending.It can be based on from least one of the first wireless device or the second wireless device
And the received signal quality or at least one of signal power of third wireless device, to estimate to interfere.It can be based on next
It is done from least one of the first wireless device or the second wireless device to from the previous of third wireless device received signal
It disturbs, to estimate to interfere.Base station is determined based on estimated interference between the first wireless device and the second wireless device
The transmission power (1204) of peer-to-peer communications.Transmission power can be for the first wireless device (for example, wireless device 404) and
The maximum transmission power of peer-to-peer communications between two wireless devices (for example, wireless device 406).Base station to the first wireless device and
Second wireless device, which is sent, communicates institute with base station progress WWAN by third wireless device (for example, wireless device 408) for use
It is logical that the allowance and transmission power of the time-frequency resources used, second wireless device and the first wireless device carry out equity
Believe (1206).Base station uses the WWAN for carrying out Peer Data Communication between the first wireless device and the second wireless device to provide
Source receives ACK/NACK from the first wireless device, and using WWAN resource to the second wireless device send the received ACK of institute or
Person NACK (1208).It base station can also be in company with the reference signal for permitting sending to the transmission of the first wireless device from the second wireless device
Transmission power (1210).Base station can also send position of the reference signal sent from the second wireless device in WWAN resource
(1212)。
Figure 13 is the conceptual block diagram 1300 for showing the function of the second exemplary means 100.Device 100 can be such as base
Stand 402 etc base station.Device 100 includes module 1302, and the module 1302 is to the first wireless device and the second wireless device
It sends and carries out the allowance that WWAN communicates used time-frequency resources with base station for using by third wireless device, wherein
Second wireless device and the first wireless device are in peer-to-peer communications.Device 100 further includes module 1304, the module 1304
Based on the estimated interference to from third wireless device received signal, determine for wireless in the first wireless device and second
The transmission power of peer-to-peer communications is carried out between equipment.Device 100 further includes module 1306, and the module 1306 is in company with allowance to extremely
Few first wireless device sends transmission power.Device 100 may include additional module, and the additional module executes Figure 12's
Each step in step in aforementioned flowchart.Therefore, each of aforementioned flowchart of Figure 12 step can be by mould
Part executes and device 100 may include one or more of these modules.
Referring to Fig. 1 and Figure 11, in one configuration, device for wireless communications 100 (it can be wireless device) packet
It includes: permitting for being received from base station, the allowance is to be carried out used in WWAN communication for use as 3rd device and base station
Time-frequency resources to carry out the module of peer-to-peer communications with second device.Device 100 further include: for being used in company with permit reception
In the module of the transmission power of peer-to-peer communications.Transmission power be based on can as base station caused by the received transmission of 3rd device
It interferes to determine.Device 100 further include: in time-frequency resources, the received transmitting function to be less than or equal to
The power of rate, the module communicated using peer-to-peer communications with second device.Device 100 can also include: for when described
In m- frequency resource, to the module of second device pilot signal transmitted, for being filled from second in the time-frequency resources
The module for receiving the channel quality indicator feedback in response to transmitted pilot signal is set, and for based on the received channel of institute
Quality index feedback, determines for the module with the rate of the communication of second device.In this configuration, logical with second device
Letter is with the progress of identified rate.Device 100 further include: for being led from second device reception in the time-frequency resources
The module of frequency signal, and be used in response to the received pilot signal of institute, in the time-frequency resources, to second device
Send the module of channel quality indicator feedback.In this configuration, with the communication of second device with anti-based on channel quality indicator
Rate determined by presenting carries out.Device 100 can also include: for from second device receive reference signal module, for
With the module of the first power of permit reception, wherein the first power is the power for sending reference signal, ginseng is received with it for determining
The module of the second power of signal is examined, for being based on the first power and the second power, to the module that channel is estimated, Yi Jiyong
In based on the received transmission power of estimated channel and institute, the module of the rate for being communicated with second device is determined.
In this configuration, with the communication of second device with the progress of identified rate.Device 100 can also include: for receive from
The module of position of the reference signal that second device is sent in WWAN resource.In this configuration, reference signal is provided in WWAN
Position in source is received from base station.Device 100 can also include: for using WWAN resource, to base station send for pair
Etc. the ACK or NACK of data communications module.Device 100 can also include: for receiving needle from base station using WWAN resource
To the module of the ACK or NACK of Peer Data Communication.In this configuration, ACK or NACK is derived from second device.It is aforementioned
Module be configured as executing the device 100 for the function of being stated by aforementioned modules or processing system 114.
Referring to Fig. 1 and Figure 13, in one configuration, device for wireless communications 100 (it can be base station) include: use
Institute is communicated with device progress WWAN by third wireless device for use in sending to the first wireless device and the second wireless device
The module of the allowance of the time-frequency resources used, wherein the second wireless device and the first wireless device are in peer-to-peer communications.Dress
Set 100 further include: for determining in the first nothing based on the estimated interference to from third wireless device received signal
The module of the transmission power of peer-to-peer communications between line equipment and the second wireless device.Device 100 further include: in company with allowance
The module of transmission power is sent at least the first wireless device.Device 100 further include: for whether small based on estimated interference
In thresholding, judge whether to send the module permitted.Device 100 can also include: use in the first wireless device and second
The WWAN resource that Peer Data Communication is carried out between wireless device, the module of ACK or NACK is received from the first wireless device, with
And for use WWAN resource, to the second wireless device send received ACK or NACK module.Device 100 can be with
It include: for the mould in company with the transmission power for permitting sending the reference signal sent from the second wireless device to the first wireless device
Block.Device 100 can also include: the position for sending the reference signal sent from the second wireless device in WWAN resource
Module.Module above-mentioned is configured as executing the device 100 for the function of being stated by aforementioned modules or processing system 114.
It should be understood that the particular order of step or level are the explanations of way of example in the disclosed process.It should
Understand, according to design preference, the particular order or level of step in process processing can be rearranged.Appended method power
Benefit requires the element that each step is provided with sample order, is not meant to the limit by given particular order or level
System.
The description of front is provided so that any person skilled in the art can implement various aspects described herein.To this
The various modifications of a little aspects would be obvious to one skilled in the art and rule as defined herein
It can be applied to other aspects.Therefore, the claims are not intended to be limited to aspect shown herein, but meet and weigh
The consistent full scope of content expressed by sharp claim, wherein unless explicitly stated otherwise in this way, otherwise referring to singular
Element be not intended to and mean " one and only one ", but " one or more ".It clearly states unless otherwise, it is no
Then term "some" refer to one or more.Throughout present disclosure description various aspects element, for this field
Those of ordinary skill for it is known or later by the entire infrastructure known and function equivalent expressly
Be incorporated herein, and be intended to include by claims.In addition, there is no content to be intended in content disclosed herein
The public is offered to, regardless of whether such disclosure is expressly recited in detail in the claims.There is no claim element to want
It is interpreted functional module, unless element is clearly using phrase " module being used for ... " come what is recorded.
Claims (41)
1. a kind of method for operating the first wireless device, comprising:
It receives and permits from base station, the allowance is to carry out wireless wide area network by third wireless device and the base station for use
(WWAN) time-frequency resources used in communicating to carry out peer-to-peer communications with the second wireless device；
In company with the permit reception be used for peer-to-peer communications transmission power, the transmission power be based on can to by the base station from
It interferes to determine caused by the received transmission of third wireless device；
On the time-frequency resources, to be less than or equal to the power of the received transmission power of institute, using peer-to-peer communications and
Second wireless device is communicated；
Reference signal is received from second wireless device；
In company with first power of permit reception, first power is the power that the reference signal is sent with it；
Determine the second power that the reference signal is received with it；
Based on first power and second power, channel is estimated；And
Based on the received transmission power of estimated channel and institute, the speed for being communicated with second wireless device is determined
Rate,
Wherein, the communication carried out with second wireless device is carried out with identified rate.
2. according to the method described in claim 1, wherein, the transmission power is in first wireless device and described
The maximum transmission power of peer-to-peer communications between second wireless device.
3. according to the method described in claim 1, further include:
Position of the reference signal sent from second wireless device in WWAN resource is received, the reference signal is described
Position in WWAN resource is received from the base station.
4. according to the method described in claim 1, further include:
Using WWAN resource, the base station Xiang Suoshu sends the confirmation (ACK) or negative confirmation (NACK) for being directed to Peer Data Communication.
5. according to the method described in claim 1, further include:
Using WWAN resource, the confirmation (ACK) or negative confirmation (NACK) for being directed to Peer Data Communication are received from the base station,
The ACK or NACK is derived from second wireless device.
6. according to the method described in claim 1, wherein, only when the interference is less than thresholding, received from the base station described in
Permit.
7. a kind of method for operating base station, comprising:
It sends to the first wireless device and the second wireless device and is carried out wirelessly for use by third wireless device and the base station
Wide area network (WWAN) communicates the allowance of used time-frequency resources, wherein second wireless device and first nothing
Line equipment is in peer-to-peer communications；
Based on the estimated interference to from the third wireless device received signal, determines and be used for first wireless device
The transmission power of peer-to-peer communications between second wireless device；
Permit sending the transmission power at least described first wireless device in company with described；And
In company with the allowance, the first wireless device of Xiang Suoshu sends the transmitting of the reference signal sent from second wireless device
Power so that the transmission power of first wireless device based on the reference signal sent from second wireless device come
Determine the rate for the peer-to-peer communications with second wireless device.
8. according to the method described in claim 7, wherein, the interference is based on from first wireless device or described the
In at least one of two wireless devices and the third wireless device received signal quality or signal power at least
One estimates.
9. according to the method described in claim 7, further include:
Whether it is less than thresholding based on estimated interference, judges whether to send the allowance.
10. according to the method described in claim 7, wherein, the interference is based on from first wireless device or described
At least one of second wireless device is to estimating from the previous interference of the third wireless device received signal.
11. according to the method described in claim 7, wherein, the transmission power is for first wireless device and described
The maximum transmission power of peer-to-peer communications between second wireless device.
12. according to the method described in claim 7, further include:
Using the WWAN resource for the Peer Data Communication between first wireless device and second wireless device, from
First wireless device receives confirmation (ACK) or negative confirmation (NACK)；And
Using the WWAN resource, the second wireless device of Xiang Suoshu sends the received ACK or NACK of institute.
13. according to the method described in claim 7, further include:
Send position of the reference signal sent from second wireless device in WWAN resource.
14. a kind of device for wireless communications, comprising:
Permit for being received from base station, the allowance is to carry out wireless wide area network by 3rd device and the base station for use
(WWAN) time-frequency resources used in communicating to carry out the module of peer-to-peer communications with second device；
For in company with the permit reception for peer-to-peer communications transmission power module, the transmission power be based on can to by
Base station interference caused by the received transmission of the 3rd device determines；
For to be less than or equal to the power of the received transmission power of institute, being led to using equity in the time-frequency resources
Believe the module communicated with the second device；
For receiving the module of reference signal from the second device；
For the module in company with first power of permit reception, first power is the function that the reference signal is sent with it
Rate；
For determining the module for receiving the second power of the reference signal with it；
For being based on first power and second power, the module estimated channel；And
For determining the speed for being communicated with the second device based on the received transmission power of estimated channel and institute
The module of rate,
Wherein, the communication carried out with the second device is carried out with identified rate.
15. device according to claim 14, wherein the transmission power is in described device and second dress
The maximum transmission power of peer-to-peer communications between setting.
16. device according to claim 14, further includes:
For receiving the module of position of the reference signal sent from the second device in WWAN resource, the reference signal
Position in the WWAN resource is received from the base station.
17. device according to claim 14, further includes:
For using WWAN resource, the base station Xiang Suoshu sends the confirmation (ACK) or negative confirmation for being directed to Peer Data Communication
(NACK) module.
18. device according to claim 14, further includes:
For using WWAN resource, the confirmation (ACK) or negative confirmation for being directed to Peer Data Communication are received from the base station
(NACK) module, the ACK or the NACK are derived from the second device.
19. device according to claim 14, wherein only when the interference is less than thresholding, receive institute from the base station
State allowance.
20. a kind of device for wireless communications, comprising:
It is carried out for use by third wireless device and described device for being sent to the first wireless device and the second wireless device
Wireless wide area network (WWAN) communicate used in time-frequency resources allowance module, wherein second wireless device with
First wireless device is in peer-to-peer communications；
For determining wireless for described first based on the estimated interference to from the third wireless device received signal
The module of the transmission power of peer-to-peer communications between equipment and second wireless device；
For in company with the module for permitting sending the transmission power at least described first wireless device；And
For in company with the allowance, the first wireless device of Xiang Suoshu to send the reference signal sent from second wireless device
Transmission power, so that the transmitting function of first wireless device based on the reference signal sent from second wireless device
Rate determines the module of the rate for the peer-to-peer communications with second wireless device.
21. device according to claim 20, wherein the interference is based on from first wireless device or described
In at least one of second wireless device and the third wireless device received signal quality or signal power extremely
Lack one to estimate.
22. device according to claim 20, further includes:
For whether being less than thresholding based on estimated interference, judge whether the module for sending the allowance.
23. device according to claim 20, wherein the interference is based on from first wireless device or described
At least one of second wireless device is to estimating from the previous interference of the third wireless device received signal.
24. device according to claim 20, wherein the transmission power is for first wireless device and described
The maximum transmission power of peer-to-peer communications between second wireless device.
25. device according to claim 20, further includes:
For using the WWAN money for the Peer Data Communication between first wireless device and second wireless device
Source receives the module of confirmation (ACK) or negative confirmation (NACK) from first wireless device；And
For using the WWAN resource, the second wireless device of Xiang Suoshu send received ACK or NACK module.
26. device according to claim 20, further includes:
For sending the module of position of the reference signal sent from second wireless device in WWAN resource.
27. a kind of device for wireless communications, comprising:
Processing system, the processing system are configured as:
It receives and permits from base station, the allowance is to carry out wireless wide area network (WWAN) by 3rd device and the base station for use
Time-frequency resources used in communicating to carry out peer-to-peer communications with second device；
In company with the permit reception be used for peer-to-peer communications transmission power, the transmission power be based on can to by the base station from
It interferes to determine caused by the received transmission of 3rd device；
On the time-frequency resources, to be less than or equal to the power of the received transmission power of institute, using peer-to-peer communications and
The second device is communicated；
Reference signal is received from the second device；
In company with first power of permit reception, first power is the power that the reference signal is sent with it；
Determine the second power that the reference signal is received with it；
Based on first power and second power, channel is estimated；And
Based on the received transmission power of estimated channel and institute, the rate for being communicated with the second device is determined,
Wherein, the communication carried out with the second device is carried out with identified rate.
28. device according to claim 27, wherein the transmission power is in described device and second dress
The maximum transmission power of peer-to-peer communications between setting.
29. device according to claim 27, wherein the processing system is also configured to
Position of the reference signal sent from the second device in WWAN resource is received, the reference signal is in the WWAN
Position in resource is received from the base station.
30. device according to claim 27, wherein the processing system is also configured to
Using WWAN resource, the base station Xiang Suoshu sends the confirmation (ACK) or negative confirmation (NACK) for being directed to Peer Data Communication.
31. device according to claim 27, wherein the processing system is also configured to
Using WWAN resource, the confirmation (ACK) or negative confirmation (NACK) for being directed to Peer Data Communication are received from the base station,
The ACK or NACK is derived from the second device.
32. device according to claim 27, wherein only when the interference is less than thresholding, receive institute from the base station
State allowance.
33. a kind of device for wireless communications, comprising:
Processing system, the processing system are configured as:
It sends to the first wireless device and the second wireless device and is carried out wirelessly for use by third wireless device and described device
Wide area network (WWAN) communicates the allowance of used time-frequency resources, wherein second wireless device and first nothing
Line equipment is in peer-to-peer communications；
Based on the estimated interference to from the third wireless device received signal, determines and be used for first wireless device
The transmission power of peer-to-peer communications between second wireless device；
Permit sending the transmission power at least described first wireless device in company with described；And
In company with the allowance, the first wireless device of Xiang Suoshu sends the transmitting of the reference signal sent from second wireless device
Power so that the transmission power of first wireless device based on the reference signal sent from second wireless device come
Determine the rate for the peer-to-peer communications with second wireless device.
34. device according to claim 33, wherein the interference is based on from first wireless device or described
In at least one of second wireless device and the third wireless device received signal quality or signal power extremely
Lack one to estimate.
35. device according to claim 33, wherein the processing system is also configured to
Whether it is less than thresholding based on estimated interference, judges whether to send the allowance.
36. device according to claim 33, wherein the interference is based on from first wireless device or described
At least one of second wireless device is to estimating from the previous interference of the third wireless device received signal.
37. device according to claim 33, wherein the transmission power is for first wireless device and described
The maximum transmission power of peer-to-peer communications between second wireless device.
38. device according to claim 33, wherein the processing system is also configured to
Using the WWAN resource for the Peer Data Communication between first wireless device and second wireless device, from
First wireless device receives confirmation (ACK) or negative confirmation (NACK)；And
Using the WWAN resource, the second wireless device of Xiang Suoshu sends the received ACK or NACK of institute.
39. device according to claim 33, wherein the processing system is also configured to
Send position of the reference signal sent from second wireless device in WWAN resource.
40. it is a kind of in the first wireless device store computer program computer-readable medium, the computer program by
Device is managed to execute to carry out following operation:
It receives and permits from base station, the allowance is to carry out wireless wide area network by third wireless device and the base station for use
(WWAN) time-frequency resources used in communicating to carry out peer-to-peer communications with the second wireless device；
In company with the permit reception be used for peer-to-peer communications transmission power, the transmission power be based on can to by the base station from
It interferes to determine caused by the received transmission of third wireless device；
On the time-frequency resources, to be less than or equal to the power of the received transmission power of institute, using peer-to-peer communications and
Second wireless device is communicated；
Reference signal is received from second wireless device；
In company with first power of permit reception, first power is the power that the reference signal is sent with it；
Determine the second power that the reference signal is received with it；
Based on first power and second power, channel is estimated；And
Based on the received transmission power of estimated channel and institute, the speed for being communicated with second wireless device is determined
Rate,
Wherein, the communication carried out with second wireless device is carried out with identified rate.
41. a kind of computer-readable medium for storing computer program in a base station, the computer program are executed by processor
To carry out following operation:
It sends to the first wireless device and the second wireless device and is carried out wirelessly for use by third wireless device and the base station
Wide area network (WWAN) communicates the allowance of used time-frequency resources, wherein second wireless device and first nothing
Line equipment is in peer-to-peer communications；
Based on the estimated interference to from the third wireless device received signal, determines and be used for first wireless device
The transmission power of peer-to-peer communications between second wireless device；
Permit sending the transmission power at least described first wireless device in company with described；And
In company with the allowance, the first wireless device of Xiang Suoshu sends the transmitting of the reference signal sent from second wireless device
Power so that the transmission power of first wireless device based on the reference signal sent from second wireless device come
Determine the rate for the peer-to-peer communications with second wireless device.
Applications Claiming Priority (3)
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| US13/232,823 US8693431B2 (en) | 2011-09-14 | 2011-09-14 | Methods and apparatus for interference based joint scheduling of peer to peer links with WWAN |
| US13/232,823 | 2011-09-14 | ||
| PCT/US2012/055188 WO2013040229A1 (en) | 2011-09-14 | 2012-09-13 | Methods and apparatus for interference based joint scheduling of peer to peer links with wwan |
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| CN103891368B true CN103891368B (en) | 2019-03-01 |
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| US20130064214A1 (en) | 2013-03-14 |
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| JP2014530541A (en) | 2014-11-17 |
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| EP2756717A1 (en) | 2014-07-23 |
| US8693431B2 (en) | 2014-04-08 |
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| CN103891368A (en) | 2014-06-25 |
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